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Account of the Operations of the Great Trigonometrical Survey of India
James Thomas WalkerIndia. Great Trigonometrical Survey
其他書名
The standards of measure and the base-lines
出版Printed at the Office of the Great Trigonometrical Survey, 1870
URLhttp://books.google.com.hk/books?id=j7KonQEACAAJ&hl=&source=gbs_api